Hugh Jackman is urging fans to get screened and use sunscreen in a post revealing he’s been treated again for skin cancer.

The actor shared a photo on social media showing a bandage on his nose. “An example of what happens when you don’t wear sunscreen. Basal Cell. The mildest form of cancer but serious, nonetheless. PLEASE USE SUNSCREEN and get regular check-ups,” he wrote on Monday.

An example of what happens when you don’t use sunscreen. Basal cell. Mildest form of cancer. USE SUNSCREEN PLEASE !! pic.twitter.com/phQsRS5QiI

The Eddie the Eagle star has had four previous skin cancers removed since November 2013, three on his nose and one on his shoulder.

Jackman admitted to PEOPLEin May 2015 that he never wore sunscreen growing up in Australia and didn’t realize the seriousness of the diagnosis. “I was trying to keep calm about it but it wasn’t until [skin cancer surgeon] Dr. Michael Albom really explained to me that what I had, in a way, was the kind of skin cancer you want to have if you’re going to have it,” he said. “Basal cell carcinoma is just something you have to deal with. It’s cancerous. It will grow. You just have to get it out.”

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Following his earlier diagnoses, Jackman launched Pure Sun Defense, a line of sunsreens for children meant to raise awareness about the complications caused by sun exposure.